Linux Systems Administrator
About The Position
SAIC is seeking a Linux Systems Administrator to help operate and maintain critical, mission-essential infrastructure in complex enterprise environments. The role is part of a systems engineering team and is responsible for the health, performance, security, and lifecycle management of Linux-based infrastructure, with a primary focus on Red Hat Enterprise Linux (RHEL). The administrator will work with virtualization technologies, support enterprise-scale environments, implement automation, and contribute to continuous improvement and modernization across the server and infrastructure ecosystem. The position includes administering Linux systems; supporting VMware vSphere and VMware Cloud Foundation (VCF); applying CIS and STIG security hardening; troubleshooting infrastructure, application, operating system, connectivity, and security issues in on-premises environments; managing system resources and local repositories; and coordinating patching and lifecycle activities. The role also involves supporting Microsoft infrastructure services and desktop/workstation hardware, implementing role-based access control in multi-tenant environments, developing automation, and collaborating with infrastructure and systems teams.
Requirements
- Experience providing systems administration support in mixed Microsoft Windows and Red Hat Enterprise Linux (RHEL) environments.
- Hands-on experience installing, configuring, administering, and troubleshooting Linux operating systems.
- Experience monitoring Linux infrastructure health, performance, and availability and proactively resolving issues.
- Experience troubleshooting application, infrastructure, connectivity, and security issues in on-premises environments.
- Experience diagnosing and remediating server performance issues involving CPU, memory, storage, and system resources.
- Experience implementing Linux security hardening using CIS Benchmarks and/or STIG requirements.
- Experience maintaining local repositories and performing system patching, updates, and lifecycle management.
- Experience supporting VMware vSphere and/or VMware Cloud Foundation (VCF) environments.
- Experience performing general systems administration and infrastructure support across multiple technology platforms.
- Experience administering Microsoft infrastructure services, including Active Directory, DNS, DHCP, and related network services.
- Experience supporting desktop and workstation hardware.
- Experience implementing and managing Role-Based Access Control (RBAC) in multi-tenant environments.
- Experience developing or maintaining automation through scripting.
- Ability to support multiple priorities in a dynamic enterprise IT environment.
Nice To Haves
- Red Hat Certified System Administrator (RHCSA) and/or Red Hat Certified Engineer (RHCE) certification.
- Experience with Ansible, Puppet, or similar configuration management and automation tools.
- Working knowledge of Windows 11, Windows Server, VMware vCenter Server Appliance (VCSA), and VMware Cloud Foundation (VCF).
- Working knowledge of enterprise infrastructure hardware, appliances, and supporting technologies.
- Experience performing Windows Server installation, configuration, patching, upgrades, migrations, and ongoing administration.
- Experience supporting enterprise virtualization, server infrastructure, and hybrid technology environments.
Responsibilities
- Administer and maintain enterprise Linux environments, primarily Red Hat Enterprise Linux (RHEL).
- Maintain system availability, performance, and security through monitoring, troubleshooting, patching, and upgrades.
- Support and manage VMware vSphere and VMware Cloud Foundation (VCF) infrastructure.
- Implement Linux security best practices, including CIS and STIG hardening standards.
- Troubleshoot infrastructure, application, operating system, connectivity, and security issues across on-premises environments.
- Monitor and optimize CPU, memory, storage, and overall server performance.
- Manage local repositories and coordinate operating system patching and lifecycle activities.
- Collaborate with infrastructure and systems teams on architecture, deployment, and operational initiatives.
- Develop and enhance automation through scripting and configuration management tools.
- Support Microsoft services and technologies, including Active Directory, DNS, DHCP, and related infrastructure components.
- Support desktop and workstation hardware.
- Implement and manage Role-Based Access Control (RBAC) in multi-tenant environments.
- Contribute to enterprise technology modernization and continuous improvement efforts.
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What This Job Offers
Job Type
Full-time
Education Level
No Education Listed
